E4X: traversing xml using attribute name

Hi, This might sound really simple, but I have spent multiple hours on it to find no result. Here is the situation. MY xml structure looks like this:

<root>
      <RES>
            <R N="1">
	            <FM>11580</FM>      
            <SEZ N="name" V="dummy name"/>      
                   <SEZ N="customData" V="customValue1"/>
                   <SEZ N="width" V="247"/>      
                   <SEZ N="height" V="247"/>      
                   <S>... WOW...Life sure is a mystery</S>      
        </R>
              <R N="2">
	            <FM>11582</FM>      
                  <SEZ N="name" V="dummy name"/>      
                  <SEZ N="width" V="247"/>      
                  <SEZ N="height" V="247"/>      
                  <S>... WOW...Life sure is a mystery</S>      
            </R>
            <R N="3">
	            <FM>11584</FM>      
                  <SEZ N="name" V="dummy name"/>      
                  <SEZ N="customData" V="customValue2"/>
                  <SEZ N="width" V="247"/>      
                  <SEZ N="height" V="247"/>      
              <S>... WOW...Life sure is a mystery</S>      
            </R>    
      </RES>
</root>

Now following code:

root.RES…SEZ.(@N == “customData”)

returns me
<SEZ N=“customData” V=“customValue1”/>
<SEZ N=“customData” V=“customValue2”/>

But I am not able to refer to the corresponding parent <R> so that I can traverse it to retrieve corresponding <SEZ N=“name” V=“dummy name”/>

Please help…